The cost, in dollars, to produce x number of equipment is C(x) = 2x + 7000, x ≥ 0 and

the price-demand function, in dollars per equipment, is p(x) = 10 - 0.001x, 0 ≤ x.

C(x) denotes the cost to produce x items and p(x) denotes the price-demand function in the given economic scenario.